发布网友 发布时间:2023-12-19 17:50
共1个回答
热心网友 时间:2024-03-13 21:12
X-4/5X1/2等于3/5解答,解方程求解答谢谢。 X-4/5X1/2=3/5
X-2/5=3/5
X=3/5+2/5
X=1
0.8x-2=0.75x-0.75
0.05x=1.25
x=25
3-x/5=1/2
15-x=2.5
x=12.5
5乘0.7+40%x=91
3.5+0.4x=91
0.4x=87.5
x=218.75
8x除以2=3/4
8x=3/2
x=3/16
x-1/4=1/3
x=1/3+1/4
x=4/12+3/12
x=7/12
X-X1/4=3/5
3X/4=3/5
X=3/5×4/3
X=4/5
x÷(3/4+5/6)=3/10 求解答,谢谢
x÷(3/4+5/6)=3/10
x÷19/12=3/10
x=19/12×3/10
x=19/40
(1)1-1/3x=4, -1/3x=3, x=-9
(2)5x+1/6=x-3x-1/5, 7x=-11/30, x=-11/210
(x-4)/(x-5) + (x-8)/(x-9) = (x-5)/(x-6) + (x-7)/(x-8)
(x-5+1)/(x-5) + (x-9+1)/(x-9) = (x-6+1)/(x-6) + (x-8+1)/(x-8)
1+1/(x-5) + 1+1/(x-9) = 1+1/(x-6) + 1+1/(x-8)
1/(x-5) + 1/(x-9) = 1/(x-6) + 1/(x-8)
1/(x-9) - 1/(x-8) = 1/(x-6) - 1/(x-5)
1/{(x-9)(x-8)} = 1/{(x-6)(x-5)}
(x-9)(x-8) = (x-6)(x-5)
x²-17x+72=x²-11x+30
-6x=-42
x=7
经检验x=7是原方程的解
解:x÷3/5=15
x=15x3/5
x=9
x÷3/5=20x1/4
x÷3/5=5
x=5x3/5
x=3
***************************************************************
^__^真心祝你学习进步,如果你对这个答案有什么疑问,请追问,
另外如果你觉得我的回答对你有所帮助,请千万别忘记采纳哟!
***************************************************************